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Best Auto Repair, Waldorf

12333 Washington Square Waldorf, MD 20601

301-843-6551
Opening Hours
  • Mon 8:00AM - 5:00PM
  • Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
  • Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
  • Sat Closed
  • Sun Closed
CONTACT US

301-843-6551 | 12333 Washington Square, Waldorf, 20601

Replace Your Car's AC Thermal Expansion Valve or Orifice Tube

McGhees Auto Service

Your car or truck's AC system is under extreme pressure and the thermal expansion valve or orifice tube monitors the amount of pressure and the temperature of your A/C system. It calculates the precise amount of refrigerant that can safely go into the evaporator. A failing expansion valve or orifice tube often causes a vehicle's air conditioner to blow hot air.

Replace or Repair

  • Expansion Valves: Too much refrigerant causes your evaporator to get too cold whereas too little refrigerant would result in inadequate cooling. The expansion valve is a complex valve that regulates refrigerant flow. This process of metering the refrigerant adjusts the flow according to the temperature of the refrigerant in the evaporator coil. Talk to one of the pro mechanics at McGhees Auto Service, as this part can be replaced on its own and does not require the entire replacement of the AC assembly.
  • Orifice Tubes: Unlike the expansion valve, the orifice tube is a simple fixed device with no moving parts. It therefore cannot vary the flow of refrigerant into the evaporator, but rather causes a permanent restriction in the system. However, like the expansion valve the orifice tube regulates refrigerant flow through the system and filters debris which may come through in its screen. Often fixing a "bad orifice tube" requires replacing the entire evaporator assembly.

More AC Repair Services:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services

coupons

$20.00 OFF FIRST TIME CUSTOMER SPECIAL

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GET $20.00 OFF REPAIRS WITH YOUR FIRST VISIT TO MCGHEES AUTO SERVICE.

  • ASE (Automotive Service Excellence)
  • Jasper
  • ATI Re-Engineering Logo
  • Car Care Aware

Testimonials

, 07/05/2021
I called the night before and wanted to setup an appointment. Jim's friendly voice stated "MD inspection is 1st come ; 1st serve." I was there around 8ish. Although they didn't open til 9am, the shop was early at work, Jim got me out by 10am. I didn't pass inspection but, Bill's and Jim's personable, friendly and quick turnaround was a memorable one. This type of shop is locally owned and trustworthy. It is a dying breed. I provided the team with a KrispyKreme Gift Card after my visit. I will have to come again for a re-inspection but will also come again for any automobile needs.
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